The bands and rings of Saturn, the division
between the two latter, and the seven satellites, were also perfectly
visible, with a distinctness that a much greater magnifying power
would hardly have attained under terrestrial conditions. I was
perplexed by two peculiarities, not, so far as I know, hitherto [5]
mentioned by astronomers. The circumference did not appear to present
an even curvature.
I mean that, apart from the polar compression, the shape seemed as if
the spheroid were irregularly squeezed; so that though not broken by
projection or indentation, the limb did not present the regular
quasi-circular curvature exhibited in the focus of our telescopes.
Also, between the inner ring and the planet, with a power of 500, I
discerned what appeared to be a dark purplish ring, semi-transparent,
so that through it the bright surface of Saturn might be discerned as
through a veil. Mercury shone brightly several degrees outside the
halo surrounding the Earth's black disc; and Venus was also visible;
but in neither case did my observations allow me to ascertain anything
that has not been already noted by astronomers.
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